we have breaking news about former president george bush. the medical procedure he just underwent. >>> people who rely on the bus are bracing for a potential ac transit strike. when a walkout that could happen and the impact on riders coming up. >>> and good morning. highway 4 you can see traffic is busy coming in. we'll tell you more coming up. >>> here are the top stories we're following for you. a brush fire in the presidio threatened a national cemetery. firefighters out there face several challenges including poison oak and a hard time getting to water. three acres burned no buildings were threatened. >>> a state-wide a amber alert for two children abducted from san diego county. the 16 year old hanna anderson and ethan anderson. they were kidnapped by james lee dimaggio. he set fire to his home and killing their mother and another child. >>> bart trains -- trains are running but ac transit workers are threatening to go on strike. they handed in a 71-hour notice. and alex savage has more from oakland. you are getting reaction to that. w